Merge remote-tracking branch 's5p/for-next'
[linux-2.6/next.git] / arch / arm / mach-orion5x / terastation_pro2-setup.c
blobc9dd31d34866c11aab4766e8e11169d5508d13dd
1 /*
2 * Buffalo Terastation Pro II/Live Board Setup
4 * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 #include <linux/gpio.h>
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/platform_device.h>
15 #include <linux/pci.h>
16 #include <linux/irq.h>
17 #include <linux/delay.h>
18 #include <linux/mtd/physmap.h>
19 #include <linux/mv643xx_eth.h>
20 #include <linux/i2c.h>
21 #include <linux/serial_reg.h>
22 #include <asm/mach-types.h>
23 #include <asm/mach/arch.h>
24 #include <asm/mach/pci.h>
25 #include <mach/orion5x.h>
26 #include "common.h"
27 #include "mpp.h"
29 /*****************************************************************************
30 * Terastation Pro 2/Live Info
31 ****************************************************************************/
34 * Terastation Pro 2 hardware :
35 * - Marvell 88F5281-D0
36 * - Marvell 88SX6042 SATA controller (PCI)
37 * - Marvell 88E1118 Gigabit Ethernet PHY
38 * - 256KB NOR flash
39 * - 128MB of DDR RAM
40 * - PCIe port (not equipped)
44 * 256K NOR flash Device bus boot chip select
47 #define TSP2_NOR_BOOT_BASE 0xf4000000
48 #define TSP2_NOR_BOOT_SIZE SZ_256K
50 /*****************************************************************************
51 * 256KB NOR Flash on BOOT Device
52 ****************************************************************************/
54 static struct physmap_flash_data tsp2_nor_flash_data = {
55 .width = 1,
58 static struct resource tsp2_nor_flash_resource = {
59 .flags = IORESOURCE_MEM,
60 .start = TSP2_NOR_BOOT_BASE,
61 .end = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1,
64 static struct platform_device tsp2_nor_flash = {
65 .name = "physmap-flash",
66 .id = 0,
67 .dev = {
68 .platform_data = &tsp2_nor_flash_data,
70 .num_resources = 1,
71 .resource = &tsp2_nor_flash_resource,
74 /*****************************************************************************
75 * PCI
76 ****************************************************************************/
77 #define TSP2_PCI_SLOT0_OFFS 7
78 #define TSP2_PCI_SLOT0_IRQ_PIN 11
80 void __init tsp2_pci_preinit(void)
82 int pin;
85 * Configure PCI GPIO IRQ pins
87 pin = TSP2_PCI_SLOT0_IRQ_PIN;
88 if (gpio_request(pin, "PCI Int1") == 0) {
89 if (gpio_direction_input(pin) == 0) {
90 irq_set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW);
91 } else {
92 printk(KERN_ERR "tsp2_pci_preinit failed "
93 "to set_irq_type pin %d\n", pin);
94 gpio_free(pin);
96 } else {
97 printk(KERN_ERR "tsp2_pci_preinit failed to "
98 "gpio_request %d\n", pin);
102 static int __init tsp2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
104 int irq;
107 * Check for devices with hard-wired IRQs.
109 irq = orion5x_pci_map_irq(dev, slot, pin);
110 if (irq != -1)
111 return irq;
114 * PCI IRQs are connected via GPIOs.
116 if (slot == TSP2_PCI_SLOT0_OFFS)
117 return gpio_to_irq(TSP2_PCI_SLOT0_IRQ_PIN);
119 return -1;
122 static struct hw_pci tsp2_pci __initdata = {
123 .nr_controllers = 2,
124 .preinit = tsp2_pci_preinit,
125 .swizzle = pci_std_swizzle,
126 .setup = orion5x_pci_sys_setup,
127 .scan = orion5x_pci_sys_scan_bus,
128 .map_irq = tsp2_pci_map_irq,
131 static int __init tsp2_pci_init(void)
133 if (machine_is_terastation_pro2())
134 pci_common_init(&tsp2_pci);
136 return 0;
139 subsys_initcall(tsp2_pci_init);
141 /*****************************************************************************
142 * Ethernet
143 ****************************************************************************/
145 static struct mv643xx_eth_platform_data tsp2_eth_data = {
146 .phy_addr = 0,
149 /*****************************************************************************
150 * RTC 5C372a on I2C bus
151 ****************************************************************************/
153 #define TSP2_RTC_GPIO 9
155 static struct i2c_board_info __initdata tsp2_i2c_rtc = {
156 I2C_BOARD_INFO("rs5c372a", 0x32),
159 /*****************************************************************************
160 * Terastation Pro II specific power off method via UART1-attached
161 * microcontroller
162 ****************************************************************************/
164 #define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
166 static int tsp2_miconread(unsigned char *buf, int count)
168 int i;
169 int timeout;
171 for (i = 0; i < count; i++) {
172 timeout = 10;
174 while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
175 if (--timeout == 0)
176 break;
177 udelay(1000);
180 if (timeout == 0)
181 break;
182 buf[i] = readl(UART1_REG(RX));
185 /* return read bytes */
186 return i;
189 static int tsp2_miconwrite(const unsigned char *buf, int count)
191 int i = 0;
193 while (count--) {
194 while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
195 barrier();
196 writel(buf[i++], UART1_REG(TX));
199 return 0;
202 static int tsp2_miconsend(const unsigned char *data, int count)
204 int i;
205 unsigned char checksum = 0;
206 unsigned char recv_buf[40];
207 unsigned char send_buf[40];
208 unsigned char correct_ack[3];
209 int retry = 2;
211 /* Generate checksum */
212 for (i = 0; i < count; i++)
213 checksum -= data[i];
215 do {
216 /* Send data */
217 tsp2_miconwrite(data, count);
219 /* send checksum */
220 tsp2_miconwrite(&checksum, 1);
222 if (tsp2_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
223 printk(KERN_ERR ">%s: receive failed.\n", __func__);
225 /* send preamble to clear the receive buffer */
226 memset(&send_buf, 0xff, sizeof(send_buf));
227 tsp2_miconwrite(send_buf, sizeof(send_buf));
229 /* make dummy reads */
230 mdelay(100);
231 tsp2_miconread(recv_buf, sizeof(recv_buf));
232 } else {
233 /* Generate expected ack */
234 correct_ack[0] = 0x01;
235 correct_ack[1] = data[1];
236 correct_ack[2] = 0x00;
238 /* checksum Check */
239 if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
240 recv_buf[3]) & 0xFF) {
241 printk(KERN_ERR ">%s: Checksum Error : "
242 "Received data[%02x, %02x, %02x, %02x]"
243 "\n", __func__, recv_buf[0],
244 recv_buf[1], recv_buf[2], recv_buf[3]);
245 } else {
246 /* Check Received Data */
247 if (correct_ack[0] == recv_buf[0] &&
248 correct_ack[1] == recv_buf[1] &&
249 correct_ack[2] == recv_buf[2]) {
250 /* Interval for next command */
251 mdelay(10);
253 /* Receive ACK */
254 return 0;
257 /* Received NAK or illegal Data */
258 printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
259 "Received\n", __func__);
261 } while (retry--);
263 /* Interval for next command */
264 mdelay(10);
266 return -1;
269 static void tsp2_power_off(void)
271 const unsigned char watchdogkill[] = {0x01, 0x35, 0x00};
272 const unsigned char shutdownwait[] = {0x00, 0x0c};
273 const unsigned char poweroff[] = {0x00, 0x06};
274 /* 38400 baud divisor */
275 const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
277 pr_info("%s: triggering power-off...\n", __func__);
279 /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
280 writel(0x83, UART1_REG(LCR));
281 writel(divisor & 0xff, UART1_REG(DLL));
282 writel((divisor >> 8) & 0xff, UART1_REG(DLM));
283 writel(0x1b, UART1_REG(LCR));
284 writel(0x00, UART1_REG(IER));
285 writel(0x07, UART1_REG(FCR));
286 writel(0x00, UART1_REG(MCR));
288 /* Send the commands to shutdown the Terastation Pro II */
289 tsp2_miconsend(watchdogkill, sizeof(watchdogkill)) ;
290 tsp2_miconsend(shutdownwait, sizeof(shutdownwait)) ;
291 tsp2_miconsend(poweroff, sizeof(poweroff));
294 /*****************************************************************************
295 * General Setup
296 ****************************************************************************/
297 static unsigned int tsp2_mpp_modes[] __initdata = {
298 MPP0_PCIE_RST_OUTn,
299 MPP1_UNUSED,
300 MPP2_UNUSED,
301 MPP3_UNUSED,
302 MPP4_NAND, /* BOOT NAND Flash REn */
303 MPP5_NAND, /* BOOT NAND Flash WEn */
304 MPP6_NAND, /* BOOT NAND Flash HREn[0] */
305 MPP7_NAND, /* BOOT NAND Flash WEn[0] */
306 MPP8_GPIO, /* MICON int */
307 MPP9_GPIO, /* RTC int */
308 MPP10_UNUSED,
309 MPP11_GPIO, /* PCI Int A */
310 MPP12_UNUSED,
311 MPP13_GPIO, /* UPS on UART0 enable */
312 MPP14_GPIO, /* UPS low battery detection */
313 MPP15_UNUSED,
314 MPP16_UART, /* UART1 RXD */
315 MPP17_UART, /* UART1 TXD */
316 MPP18_UART, /* UART1 CTSn */
317 MPP19_UART, /* UART1 RTSn */
321 static void __init tsp2_init(void)
324 * Setup basic Orion functions. Need to be called early.
326 orion5x_init();
328 orion5x_mpp_conf(tsp2_mpp_modes);
331 * Configure peripherals.
333 orion5x_setup_dev_boot_win(TSP2_NOR_BOOT_BASE,
334 TSP2_NOR_BOOT_SIZE);
335 platform_device_register(&tsp2_nor_flash);
337 orion5x_ehci0_init();
338 orion5x_eth_init(&tsp2_eth_data);
339 orion5x_i2c_init();
340 orion5x_uart0_init();
341 orion5x_uart1_init();
343 /* Get RTC IRQ and register the chip */
344 if (gpio_request(TSP2_RTC_GPIO, "rtc") == 0) {
345 if (gpio_direction_input(TSP2_RTC_GPIO) == 0)
346 tsp2_i2c_rtc.irq = gpio_to_irq(TSP2_RTC_GPIO);
347 else
348 gpio_free(TSP2_RTC_GPIO);
350 if (tsp2_i2c_rtc.irq == 0)
351 pr_warning("tsp2_init: failed to get RTC IRQ\n");
352 i2c_register_board_info(0, &tsp2_i2c_rtc, 1);
354 /* register Terastation Pro II specific power-off method */
355 pm_power_off = tsp2_power_off;
358 MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live")
359 /* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */
360 .boot_params = 0x00000100,
361 .init_machine = tsp2_init,
362 .map_io = orion5x_map_io,
363 .init_early = orion5x_init_early,
364 .init_irq = orion5x_init_irq,
365 .timer = &orion5x_timer,
366 .fixup = tag_fixup_mem32,
367 MACHINE_END